Data Publication

Ring-shear test data of quartz sand G12 used for analogue experiments in the Helmholtz Laboratory for Tectonic Modelling (HelTec) at the GFZ German Research Centre for Geosciences in Potsdam

Rosenau, Matthias | Pohlenz, Andre | Kemnitz, Helga | Warsitzka, Michael

GFZ Data Services

(2018)

Descriptions

This dataset provides friction data from ring-shear tests (RST) for a quartz sand (“G12”). This material is used in various types of analogue experiments in the Helmholtz Laboratory for Tectonic Modelling (HelTec) at the GFZ German Research Centre for Geosciences in Potsdam for simulating brittle rocks in the upper crust. The material has been characterized by means of internal friction coefficients µ and cohesions C. According to our analysis the material shows a Mohr-Coulomb behaviour characterized by a linear failure envelope and peak, dynamic and reactivation friction coefficients of µP = 0.69, µD = 0.55 and µR = 0.62, respectively. Cohesions C are in the order of 50 – 110 Pa. The material shows a minor rate-weakening of <1% per ten-fold change in shear velocity. Further information about materical characteristics, measurement procedures, sample preparation, the RST (Ring-shear test) and VST (Velocity stepping test) procedure, as well as the analysed method is proviced in the data description file. The list of files explains the file and folder structure of the data set.

Keywords

MSL enriched keywords

Measured property

friction - controlled slip rate

cohesion

Measured property

friction - controlled slip rate

cohesion

friction coefficient

Inferred deformation behavior

deformation behaviour

frictional deformation

friction coefficient

Software

Matlab (Mathworks)

minerals

silicate minerals

tectosilicates

quartz

unconsolidated sediment

clastic sediment

sand

Apparatus

deformation testing

shear testing

rotary shear apparatus

Apparatus

characterization of modelling material

frictional property determination

rotary shear apparatus

brittle deformation

Earth's structure

Earth crust

upper crust

MSL vocabulary keywords corresponding to originally assigned keywords

cohesion

friction coefficient

frictional deformation

friction coefficient

Matlab (Mathworks)

Originally assigned keywords

analogue models of geologic processes

EPOS

multi-scale Laboratories

property data of analogue modelling materials

software tools

Cohesion

deformation > fracturing

earth interior setting > crust setting > continental-crustal setting > upper continental crustal setting

EARTH SCIENCE > SOLID EARTH > TECTONICS

EARTH SCIENCE SERVICES > DATA ANALYSIS AND VISUALIZATION > CALIBRATION/VALIDATION

fault

Force sensor

Friction coefficient

Matlab (Mathworks)

Ring-shear tester

Sand > Quartz Sand

tectonic and structural features

MSL enriched sub domains

rock and melt physics

analogue modelling of geologic processes

Resource Type

Dataset

Source

https://dataservices.gfz.de/panmetaworks/showshort.php?id=escidoc:3781889

Source publisher

GFZ Data Services

DOI

10.5880/gfz.4.1.2019.003